same problem, upgrades are bringing more troubles than ever. beside Bluetooth normal connectivity, I cannot find a single customer or apple user around the world who has successfully used Bluetooth teethering on Monterey. Recent releases were probably most poorly coded and tested. full of troubles. usb teethering not working, Bluetooth connection not working, if somehow connected, Bluetooth teethering is not working, mobile hotspot not working, sometime wifi not connecting despite correct password, still forcing user to enter a wpa2 password. I started praying to Jesus now, may be that's how my problem will be resolved.